RNAV vs IFR GPS

"Stan Gosnell" wrote in message =
...
wrote in :
=20
I remember 3023.5, except I can't recall what it was for. Was it a
common HF tower frequency even though most of the equppage was VHF =
by
then? Perhaps you had a VHF receiver, but only an HF transmitter?=20
From the day I started the aircraft I flew either had no radios or
they had VHF transceivers (perhaps with only a few transmit crystals
and an analog receiver turner.) I remember my first IFR set well, =
the
Narco Omnigator. Did a lot of ATCS en route communications with =
that
equipment.=20
=20
3023.5 KHz is 3.0235 MHz, and I doubt this is what you remember. =
3023.5 Hz=20
is possible, since this is in the HF band, being just over 3 KHz. =20
MegaHertz band receivers weren't in general use in the 50's.
=20
--=20
Regards,
=20
Stan
=20
No, Stan, it was 3023.5 kHz AM, in the HF Aeronautical Mobile band,
which spans 2850-3155 kHz even to this day.
3.0235 kHz would be VLF, with a 100-km wavelength!
As VHF gear began to be emplaced in the 1950s,
they couldn't just suddenly abandon HF communications.

And as Sammy said, it was either the common Tower frequency,
or the common "Radio" frequency (meaning Flight Service Station).
I *think* 3023.5 kHz was for calling "Radio", who could respond
either on VHF or on the local LF/MF 4-course Adcock Range station.
If that's right, then 3105 kHz probably was the frequency for calling =
the Tower,
who could respond on the fixed frequency of 278 kHz as standard,
or on a small number of alternative HF frequencies if other towers were =
nearby.

Whew. I'd have to dig through some old stuff to remember this exactly,
but I'd lay money on Steven P. McNicoll's ability to turn it up easily.
---JRC---

"John R. Copeland" wrote:

"Stan Gosnell" wrote in message ...
wrote in :

I remember 3023.5, except I can't recall what it was for. Was it a
common HF tower frequency even though most of the equppage was VHF by
then? Perhaps you had a VHF receiver, but only an HF transmitter?
From the day I started the aircraft I flew either had no radios or
they had VHF transceivers (perhaps with only a few transmit crystals
and an analog receiver turner.) I remember my first IFR set well, the
Narco Omnigator. Did a lot of ATCS en route communications with that
equipment.

3023.5 KHz is 3.0235 MHz, and I doubt this is what you remember. 3023.5 Hz
is possible, since this is in the HF band, being just over 3 KHz.
MegaHertz band receivers weren't in general use in the 50's.

--
Regards,

Stan

No, Stan, it was 3023.5 kHz AM, in the HF Aeronautical Mobile band,
which spans 2850-3155 kHz even to this day.
3.0235 kHz would be VLF, with a 100-km wavelength!
As VHF gear began to be emplaced in the 1950s,
they couldn't just suddenly abandon HF communications.

And as Sammy said, it was either the common Tower frequency,
or the common "Radio" frequency (meaning Flight Service Station).
I *think* 3023.5 kHz was for calling "Radio", who could respond
either on VHF or on the local LF/MF 4-course Adcock Range station.
If that's right, then 3105 kHz probably was the frequency for calling the Tower,
who could respond on the fixed frequency of 278 kHz as standard,
or on a small number of alternative HF frequencies if other towers were nearby.

Whew. I'd have to dig through some old stuff to remember this exactly,
but I'd lay money on Steven P. McNicoll's ability to turn it up easily.
---JRC---

I have some 1945 WACs for Southern California. I don't see that frequency on those charts. I do see
126.18 all over the place, and some 140+ MHz. And, some really low frequency stuff as well.

wrote in message ...
=20
=20
"John R. Copeland" wrote:

And as Sammy said, it was either the common Tower frequency,
or the common "Radio" frequency (meaning Flight Service Station).
I *think* 3023.5 kHz was for calling "Radio", who could respond
either on VHF or on the local LF/MF 4-course Adcock Range station.
If that's right, then 3105 kHz probably was the frequency for =
calling the Tower,
who could respond on the fixed frequency of 278 kHz as standard,
or on a small number of alternative HF frequencies if other towers =
were nearby.

Whew. I'd have to dig through some old stuff to remember this =
exactly,
but I'd lay money on Steven P. McNicoll's ability to turn it up =
easily.
---JRC---
=20
I have some 1945 WACs for Southern California. I don't see that =
frequency on those charts. I do see
126.18 all over the place, and some 140+ MHz. And, some really low =
frequency stuff as well.
=20
OK, Sammy, I dug up a 1955 Albany Sectional (price 25 cents!), and I =
couldn't find any reference to 3023.5 or 3105 on it, either.
But "Albany Radio" could transmit on the Albany LF/MF Range station at =
263 kHz, as well as Albany VOR at 116.9 MHz.
Albany Tower's transmitting frequencies were 278 kHz, 118.7 MHz, and =
257.8 MHz.
Nearby Schenectady Tower transmitted on 284 kHz, 126.18 MHz, and 257.8 =
MHz.

Elmira Tower used LF 278 kHz, too, but its neighboring Binghamton Tower =
used LF 332 kHz.
Both Syracuse and Rochester Towers, up to the north, were far enough =
separated to re-use 278 kHz again.
I gotta stop this nostalgic stuff. I'm forcing this thread out of =
control.
---JRC---

"John R. Copeland" wrote:

And as Sammy said, it was either the common Tower frequency,
or the common "Radio" frequency (meaning Flight Service Station).

Air Traffic Communications Station, not FSS. ;-)

wrote in message ...

Air Traffic Communications Station, not FSS. ;-)


Air Traffic Communications Stations only for a brief time. These facilities
were named Airway Radio Stations when the Department of Commerce assumed
responsibility for the transcontinental airway from the Post Office in 1927.
They were renamed Airway Communications Stations in 1938 and later
Interstate Airway Communications Stations. They became Air Traffic
Communications Stations after the FAA was created in August 1958 and were
renamed Flight Service Stations in March 1960.

They became Air Traffic
Communications Stations after the FAA was created in August 1958 and were
renamed Flight Service Stations in March 1960.

That could be. But, that was the period in which I got my instrument rating and
did my early IFR X-Countries.

"John R. Copeland" wrote in
:

No, Stan, it was 3023.5 kHz AM, in the HF Aeronautical Mobile band,
which spans 2850-3155 kHz even to this day.

You're right, I was having momentary retreating brain stall. 3 to 30 MHz,
not kHz, is the HF band. 3025 kHz is near the bottom of the band.

--
Regards,

Stan

"Stan Gosnell" wrote in message =
...
"John R. Copeland" wrote in
:=20
=20
No, Stan, it was 3023.5 kHz AM, in the HF Aeronautical Mobile band,
which spans 2850-3155 kHz even to this day.
=20
You're right, I was having momentary retreating brain stall. 3 to 30 =
MHz,=20
not kHz, is the HF band. 3025 kHz is near the bottom of the band.
=20
=20
Ooooh! A "retreating brain stall". This fixed-wing pilot liked that.

No problem, Stan. I guessed about as much.
We all get occasional senior moments :-)
---JRC---